Process of molding sash-weights.



C. J. P. HOEHN & G. GROSS.

PROCESS or MOLDING SASH WEIGHTS.

APPLICATION FILED JUNE 15, 1908. 9Q4,958 Patented Nov. 24, 1908.

2 SHEETS-SHEET 1.

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C. J. P. HOEHN & G. GROSS.

PROCESS OF MOLDING SASH WEIGHTS.

APPLICATION FILED JUNE 15, 1908. 904,958. Patented Nov. 24, 1908. 2SHEETSSHBET 2.

III

WITNES SE6.

UNITED STATES PATENT OFFICE.

CHARLES I. P. HOEHN AND GEORGE GROSS, OF SAN FRANCISCO, CALIFORNIA,ASSIGNORS TO ENTERPRISE FOUNDRY, A CORPORATION OF CALIFORNIA.

PROCESS OF MOLDING SASH-WEIGI-ITS.

To all whom it may concern: I

Be it known that we, CHARLES J. P. I-IonHN and GEORGE Gnoss, citizens ofthe United States, residing at San Francisco, in the county of SanFrancisco, State of California, have invented certain new and use fulImprovements in Processes of Molding Sash-WVeights, of which thefollowing is a specification.

This invention relates particularly to molding sash weights but is notlimited in this respect, as it may be utilized in the molding of otherarticles where the part or parts embedded in the sand are of greaterbreadth, width or length than the base or plate of the pattern,requiring the pattern to be made in sections and withdrawn separately.

Our invention obviates the necessity for a sectional pattern.

In the accompanying drawing we have shown the invention in connectionwith a sash weight, but as stated, do not limit ourselves in thisparticular.

Figure l is a plan view of a sash weight of known construction. Fig. 2is a side elevation of the same. Fig. 3 is a sectional view of a sandbox with the pattern in place and the sand tamped around said pattern.Fig. 4 is a view of the sand box reversed and the pattern withdrawn.Fig. 5 is a plan view of the pattern. Figs. 6 and 7 are front and rearviews of the pattern body minus the base. Fig. 8 is a detailed plan viewshowing the sub-base of the pattern.

The sash weights are indicated in Fig. 1 at A having a loop 6 at one endand a pin 10 at the other.

It is the object of this invention to provide simple and effective meansfor molding the sash weight with the staple 6 without requiring asectional pattern.

As shown in these drawings, the pattern which is of the same shape asthe body of the sash weight is shown at 5. This is supported upon a baseplate 1 forming the bottom of the sand box 12 in the view shown in Fig.3, and this base plate is provided with a movable plate 2 sliding withina recess within the base plate, as shown also in Fig. 8, and keptpressed outwardly in the position shown in Figs. 3 and 8 by a spring 13held within an enlarged recess 14 in one end of the base plate andbearing against the end of the plate 2 so as to keep it pressedoutwardly normally.

Specification of Letters Patent.

Application filed June 15, 1908.

Patented Nov. 24:, 1908.

Serial No. 438,604.

When it is desired to hold the plate 2 pressed inwardly resisting thepressure of the spring 13, We utilize a pin 17 which passes through anopening 15 in the base plate, which registers with an opening 16 in thesliding plate. The sliding plate carries the filler blocks 3, rigidlysecured thereto, as shown in Figs. 3, 6 and 8, and these filler blocksare adapted to enter the cavity 4: in the pattern when the sliding plate2 is pushed back and when the plate is advanced by the pressure of thespring 13 the projecting portions 7 of the blocks extend intocorresponding recesses in the pattern and engage the ends of the stapleG holding the staple in place while the sand is being filled in to thesand box and around the pattern. In order to remove the pattern, it willbe seen that it is only necessary to push back the sliding plate whichwill allow the pattern to be withdrawn, as shown in Fig. l, leaving thestaple properly embedded and supported in the sand. As will be seen, theconstruction enables the ready removal of the pattern without disturbingthe projecting end of the staple.

The pin 10 is shown in the pattern in Fig. 3, and as held in the sand inFig. 4. This pin 10 lies in the direction of withdrawal and so nospecial provision is necessary to hold it in place.

The figure l1 simply indicates a strip on the base plate to direct thesand box into the proper position.

Vhat we claim is 1. In the molding of sash weights and the like, apattern a projecting part extending from said pattern and a movablefiller block supporting the same, substantially as described.

2. In combination with a pattern, a part supported therefrom and adaptedto form a permanent part of the casting a filler block for supportingsaid part during the molding operation, said filler block being movableto allow the withdrawal of the pattern without disturbing the insertedpart, substantially as described.

3. In combination with a pattern having a cavity a movable filler blockadapted to enter said cavity and hold to the pattern during thetampering operation an inserted piece, and means for moving said fillerblock to allow the withdrawal of the pattern, substantially asdescribed.

In testimony whereof We have aflixed our signatures in the presence oftwo Witnesses 10 this 11th day of April, 1908.

CHARLES J. P. HOEHN. GEORGE GROSS. Witnesses HENRY J. F. NIEMANN, HENRYMARTENs.

4. In combination, a base-plate 1, a mold supported thereby and havingan interior cavity, a movable plate 2, a filler block carried therebyand adapted to support an inserted piece, the said block extending intothe cavity in the mold and adapted to be detached therefrom in themovement of its supporting plate, substantially as described.

